We know, a = v/t
Here, a = 5 m/s²
v = 50 km/h= 13.88 m/s
Substitute their values into the expression:
5 = 13.88 / t
t = 13.88/5
t = 2.78 sec
Now, we know, v = d/t
13.88 = d/2.78
d = 13.88 * 2.78
d = 38.53 meter
In short, Your Answers would be:
i) It will take 2.78 sec
ii) It will travel for 38.53 m after a brakes applied.
Hope this helps!
Answer:
B
Explanation:
Speed is the magnitude of the velocity vector, so it can never be negative.
Lacks colored blood - scorpion
soft, unsegmented body - octopus
vertebrate - bird
lacks antennae - starfish
Answer:
a = 0.175 m/s^2
Explanation:
From newtons eauations of motion we know
v=u+at
here v= final velocity, u= initial velocity, a = acceleration, t= time
u = o( initialy object must be at rest)
therefore, 3.5 = 0+ a(20)
⇒ a = 3.5/20 =0.175 m/s^2
Answer:
3.2 m
Explanation:
The equation to use to solve this problem is:
where
is the final velocity
is the initial velocity
a is the acceleration
is the distance covered
For the particle in free-fall in this problem, we have
(it starts from rest)
(acceleration due to gravity)
By re-arranging the equation, we can find the distance travelled: